<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
   
  </head>
  <body>
    <div id="app">
        {{ msg.split('').reverse().join('') }}
        <br>
        {{reverseMsg()}}
        {{reverseMsg()}}
        {{reverseMsg()}}
        <br>
        {{ reverseMsg2 }}
        {{ reverseMsg2 }}
        {{ reverseMsg2 }}
    </div>

    <script src="./vue.global.js"></script>
    <script>
      const { createApp } = Vue;
      const app = createApp({
        data() {
          return {
            msg: 'hello vue'
          };
        },
        methods: {
          reverseMsg() {
            console.log('method运行了');
            return this.msg.split('').reverse().join('')
          }
        },
        // 新增 computed 属性
        computed: {
          reverseMsg2(){
            console.log('计算属性运行了');
            return this.msg.split('').reverse().join('')
          }
        }
      });
      app.mount("#app");
    </script>
  </body>
</html>
